Nut-lock



Patented Apia-4,1899;

J. C. SNYDER.

NUT LOCK. A i u nion filed Jul 15, 1898.)

(No Model.)

NlTED STATES PATET rrrcn,

JOHN C. SNYDER, OF BOXVLING GREEN, OHIO.

NUT LOCK.

SPECIFICATION forming part of Letters Patent No. 622,555, dated April 4, 1899.

Application filed July 15, 1898. Serial No. 686,089. (No model.)

provide a simple, inexpensive, and efficient device capable of securely and automatically looking a nut when the same is screwed on a bolt and'adapted to permit the nut to be removed without injury to any of the parts.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a perspective View of a nut-lock constructed in accordance with this invention. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 is a transverse sectional View; Fig. 4. is a detail perspective view of the resilient catch.

Like numerals of reference designate corre sponding parts in all the figures of the drawlugs.

l'designates a bolt provided in its threaded portion with a longitudinal groove 2 and having a transverse socket 3 at the inner end of the groove to receive an arm at of a resilient catch 5, which is arranged within the groove. The catch 5 consists of a shank provided at its outer end with a head 6 and having the arm tat its inner end. The catch at the outer end is beveled to enable a nut 7 to be readily forced over it in screwing the same on the bolt, and the head is provided at its inner side with a shoulder adapted to lock the nut against outward movement and prevent any accidental unscrewing.

The shank of the catch is slightly curved and presents a convex face to the bottom of the groove, and the latter has its bottom beveled at the outer portion at 9 to deepen the groove and enable the head to be readily de pressed therein when it is desired to remove the nut. The inner portion of the bottom of the groove is slightly beveled at 10 to form a fulcrum for setting the shank at a slight an gle and throwing the head of the catch outward.

The arm 4, which is arranged at right angles to the shank of the catch, fits snugly in the transverse socket and locks the catch against outward movement. This construction permits the catch to be readily lifted out of the groove; but when the bolt is placed in position the catch is firmly confined in the groove.

In order to enable the catch to be conveniently depressed when it is desired to remove the nut from the bolt, it is provided at the outer end of the head with a projection or nib forming a shoulder. The projection or :nib is adapted to be readily engaged by a suitable tool, and the head of the catch may be held in a depressed position until the outer portion of the nut passes over it.

The invention has the following advantages: The nut-lock, which is simple and comparatively inexpensive in construction, pos sesses great strength and durability and is automatic in its operation. The particular construction of the groove of the bolt throws the engaging portion of the catch outward and holds the same firmly against a nut and effectually prevents the same from accidentally unscrewing. The catch is adapted to engage any ordinary nut and does not necessitate any alteration in the construction thereof, and the groove may be readily formed in the bolt.

What I claim is-'- A nut-lock comprising abolt provided at its threaded portion with a longitudinal groove having an oppositely-inclined bottom forming a fulcrum, said bolt being provided at the inner end of its threaded portion witha transverse socket extending inward from the groove and terminating short of the opposite side of the bolt, and a catch consisting of a resilient shank arranged within the groove of the bolt and having its inner portion fitting against the inner side of said fulcrum, its outer portion being adapted to be depressed, the arm 4 located at the inner end of the shank and fitting in the said socket, and a head arranged at the outer end of the shank and hav- In testimony that I claiin the foregoing as ing a beveled front edge and provided with a my own I have hereto affixed my signature in rear or inner shou1der,whereby it is adapted to engage an ordinary nut, and is capable of permitting the same to pass overit freelyin screwing the nut on the bolt, substantially as described.

the presence of two witnesses.

JOHN C. SNYDER.

Witnesses:

C; W. LENIIART, IOLA BIOKERSTAFF. 

